I too, would go high, then higher, and hope a wolf does not come along.
Found this:
"Electrical wiring can be done in several ways. Some folks run conduit through their straw bale walls, and then feed the electrical wire through that. Although this is perfectly acceptable practise, it is unnecessary. Some people prefer to build (or buy) a base board 'box' to house any electrical wiring at the base of the bale wall. This allows easy access for updates, computer wiring changes in the household, etc. A less expensive, but common way to run wire through a bale wall is to have your electrician come prior to the bale raising and install the electrical wire around the house, leaving ample wire for snaking up between the bales to reach the height of switches & plugs. As the bales are being stacked, the electrical wires are embedded 8"-9" into the bale wall, to be set at the appropriate height. (The electrical boxes can be attached to wood scraps that act as spikes, to set them in place until they are plastered). We recommend a gas-tight type of electrical box, 11 10 utility box, or masonry box which has a flange on it. The gas-tight box is sealed to air leaks, and you won't have to fool around making vapour barrier 'hats' behind each box."
If bales get wet during construction they will have to be replaced with dry ones